B2216 Diagnostic Trouble Code

B2216 is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a B2216 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code B2216 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before B2216.

Fortunately, B2216 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2216 Trouble Code For Specific Cars

B2216 Mg Mga Air Suspension Vent Solenoid Output Circuit Failure
B2216 Volkswagen 1200 RCNT Solenoid Circuit Malfunction
B2216 Volkswagen Arteon Rear Wiper Select Switch "B" Short to Ground
B2216 Holden Lh Power Steering Pressure Sensor Circuit Low Input
B2216 Triumph Stag Pedal Correlation PDS1 and HPDS
B2216 Nissan Nv400 Control Sleeve Sensor Malfunction
B2216 Mitsubishi 3000 ASM Mode Circuit Range/Performance